Sten Lassmann
type: MusicGroup
description: Sten Lassmann (born 26 May 1982) is an Estonian pianist trained at the Tallinn Music High School, the Estonian Academy of Music, the Conservatoire de Paris and the Royal Academy of Music best known fo
popularity: 6
followers: 194
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaad4693774df67c0c2767781dbb89b24a1b99c0f21fe1a1c921ae95ff49f2b23
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954004
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954004
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/32ce2319-2470-46c2-8951-a2d5c823fe0c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/32ce2319-2470-46c2-8951-a2d5c823fe0c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/32ce2319-2470-46c2-8951-a2d5c823fe0c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T21:01:04Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaad4693774df67c0c2767781dbb89b24a1b99c0f21fe1a1c921ae95ff49f2b23","name":"Sten Lassmann","registered_at":"2026-06-16T07:12:07Z","symbol":"NIM0976579","token_address":"0xe461ed8ffd35bb1774e94ca61b6bb5a08e484037","type":"artist","uuid":"32ce2319-2470-46c2-8951-a2d5c823fe0c"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad4693774df67c0c2767781dbb89b24a1b99c0f21fe1a1c921ae95ff49f2b23. Chain 2 (Bitcoin): anchored in block 954004 (2026-06-16T21:01:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32ce2319-2470-46c2-8951-a2d5c823fe0c.json and https://artists.proofprofile.net/proofs/artist/32ce2319-2470-46c2-8951-a2d5c823fe0c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T21:01:04Z
  text: {"copyright_id":"0xaad4693774df67c0c2767781dbb89b24a1b99c0f21fe1a1c921ae95ff49f2b23","name":"Sten Lassmann","registered_at":"2026-06-16T07:12:07Z","symbol":"NIM0976579","token_address":"0xe461ed8ffd35bb1774e94ca61b6bb5a08e484037","type":"artist","uuid":"32ce2319-2470-46c2-8951-a2d5c823fe0c"}